Update import path for addons in emit-code.ts

Author: ndelangen

src/runtime/emit-code.ts

@@ -1,5 +1,5 @@
 import { SourceType, SNIPPET_RENDERED } from 'storybook/internal/docs-tools';
-import { addons } from 'storybook/internal/preview-api';
+import { addons } from 'storybook/preview-api';
 import type { StoryObj } from '@storybook/svelte';
 import { get } from 'es-toolkit/compat';